Device for cutting glass



April 6, 1954 H. A. PERILSTEIN ETAL' DEVICE FOR CUTT ING GLASS Filed April 20, 1953 M/ "7% 2 j /Z m7 2 m m n m E C i W m 2. Q Q i imf I v fi ii l l(l 42 82 INVENTORS. HAROLD AQPERILSTEIN a y HAR Y WANDEL ATTORNEY Patented Apr. 6, 1954 DEVICE FOR CUT-TING GLASS Harold A. Perilstein, Cynwyd', and Harry Wandel, Cornwall Heights, Pa., assignors to Stott-Hecht Glass Works, Philadelphia, Pa., a corporation of Pennsylvania Application April 20, 1953', Serial No. 349,854

Glaims. l

Th present invention relates generally to the cutting of glass and more particularly to apparatus for producing anaccurate score line" on a sheet of flat glass or the like.

An object of the present invention is to provide a simple and inexpensive, yet accurate, device for scoring a sheet of glass or the like along a line parallel to, and spaced an adjustable distance inward from, one edge of the sheet, so as to enable thesheet to be thereafter broken along an accurately predetermined line.

Other objects and advantages of the present invention are apparent in the following detailed description, appended claims and accompanying drawings.

For the purpose of illustrating the invention, there is shown inthe accompanying drawings one form thereof which is presently preferred and which has been found in practice to give satisfactory results; it being understood, however, that the invention is not limited to-the precise arrangeznents and instrumentalities shown, and that the various parts and element can be variously arranged and organized without departing from-the spirit of the invention.

Referring to the accompanying drawings in which like reference characters indicate like parts throughout:

Figure l is a top plan viewof a glass scoring device forming one embodiment of the present invention.

Figure 2 is a bottom plan view of the embodiment of Fig. 1.

Figure 3 is a side elevational' view of the embodiment of Figs. 1 and 2, on a somewhat enlarged scale.

Figure 4 is alongit'udinal cross-sectional View, taken generally along the line 6-4, on the same scale-as Fig. 3.

Figure 5 is a cross-sectional View taken generally along the line 55 of Fig. 1.

Figure 6- is atransverse cross-sectional view, taken generally along the line li -6' of'Fig. l'.

The embodiment of Figs. 1-6 may include an elongated body 2% of inverted U-shaped crosssectional configuration, having aslot 22 extending longitudinally along the major portion of its top wall 2'4 but terminating somewhat short of the ends of said wall.

The Wall'- 26 is also provided with a transverse slot '26 disposed somewhat outward of oneend' of the slot 2 2. A block 28 is secured within the channel of the body ll] outwardof the slot 26, while a second block 36 is similarly secured withinthe channel just inward oi" the slot 26'; The

opposed faces of the blocks 28 and 30 are" generally coplanar with the sides of the slot 26 so as to form a generally rectangular opening 32 extending downward through the body 29-, as: best indicated in Figs. 1 and 4.

Th outer block 28' is provided with a longitudinally extending screw threaded. opening, through which extends the screw threaded stem 3'4 of a clamping member 36 having an enlarged head 3%! at its inner end (i. e.,.within the opening 32) and a winged operating. handle 4!! at its outer end. It can be seen that manipulation of the handle it causes longitudinal movement of the member 36 so a to bring the head toward or away from the inner block 36. A conventional glass cutter 5-2, having a hard steel: cutting or scoring wheel a l journaled in a bifurcated end. thereof in the usual manner; is constructed and arranged to be inserted within the opening 32 so that the wheel 44 protrudes downward somewhat beyond the body 20', as shown in Fig 3,. where,- upon the handle Ml is manipulated to move: the member 3 5 inwardly so as to clamp the cuttersecurely in place between the head 38 emd'the' inner or seating block 30'.

A guide-member, indicated generally by the reference character 48, i's-movably mountedupon the body" 26 in a manner to be hereinafter described.

The guide-member 48 includes an elongated U'-shaped channel portion 50 disposed withimand slidable relative to, the inverted longitudinal channel of the body 20; as best shown in Figs. 2, 4 and 6; 1 The bottom wall 5'2 of the channel'portic-n 5531s aperturedadjac'ent its forwardsend (tea, the end nearer the glass cutter 4'2) soa s tore'ceive the stem 54' of'anupwardly directed bolt 56 having ahead 58. The major portion of the stem" is screw-threaded. However, the lowermost portion (i. e;, the portion nearest the head 58) is prefer ably leftunthreaded; as at 54-00, and isada'pt'ed to receive an apertured roller 66 (of brass or other similar material)" which is rotatably held intermediate thc'head 58and'the wal152.

A threadedspacing nut 52 having a hexagonal head 54 and an upwardly-directed reduced"-diamete'r shank 66" is mounted upon the threaded portionof the stem 66; the nut 62' being disposed;;in most part, within the channel portion 59; but having its shank 66 extending withinmes-1st- 22, as-best shown' in Fig. 4;

A cross-piece- 68 of inverted U-sh'aped crosssectional configuration, having" a toplwall l0 and sidewalls it, also for'mspart of the'guid'e m'ember 48. The central portionsof the sidewalls 12 are cut out so as to permit the cross-piece 88 to fit over and straddle th body 28 in right-angular longitudinally-slidable relation thereto. The top wall 18 is centrally apertured to permit the upper end of the bolt stem 54 to protrude therethrough. A second threaded spacing nut 14 is mounted upon the upper end of the stem 54, with its hexagonal head I6 disposed above the wall 18 and its downwardly-directed reduced-diameter shank 18 extending downward through th aperture in the wall I8 and into abutment with the upper end of the shank 65, as shown in Fig. 4. A washer 88 may be fitted about the shank 18 intermediate the head I6 and the wall 18.

As is apparent from Fig. 4, the two spacing nuts 62 and I4 and the bolt 56 interconnect the channel portion 58 and the cross-piece B8 rigidly, and yet so as to permit longitudinal sliding movement of the guide-member 48 along the body 28,

as well as free rotation of the roller 68 upon the lowermost unthreaded portion 54-a of the stem Disposed within the inverted channel of the cross-piece 68 are left and right insert-pieces 82 of U-shaped cross-sectional configuration, which extend from the central cut-out portions of the walls 12 to the opposite outer ends thereof. The wall 18 is provided with openings spaced somewhat inward from the outer ends thereof, while corresponding aligned openings are provided in the bottom walls 84 of the insert-pieces 82; each pair of aligned openings being adapted to receive the stem 86 of an upwardly-directed bolt 88 having a head 98. A roller 92 is rotatably mounted upon the lowermost unthreaded end 86-11 of the stem, intermediate the head 98 and the wall 84. A spacing nut 94 is screw-threadedly mounted upon the stem 86 above the unthreaded end thereof; the hexagonal head 98 of the nut 84 being preferably seated against the upper face of the wall 84, while the upwardly-directed shank 98 is adapted to bear against the lower face of the wall 18. A washer I88 and nut I82 are positioned upon the uppermost protruding end of the stem 86 and, when tightened, serve to secure the bolt 88 firmly to the wall I8 while permitting free rotation of the roller 92.

The insert-pieces 82 may be press-fitted into the channel of the cross-piece 68 so as to require no additional connection or support. However,

if desired, the threaded portion of each stem 86 may be lengthened to extend slightly below the wall 84 and a separate lock nut (not shown) may be placed thereon (intermediate the wall 84 and the roller 92) so as to provide additional support for the insert-piece.

As indicated in Fig. 5, the cross-piece 68 and each insert-piece 82 forms an enclosed rightangular boxlike structure on either side of the body 28 and serves to maintain the cross-piece 68 in accurate right-angular relationship to the body 28.

The two rollers 92 and the roller 68 are of the same size and are in alignment, transversely relativ to the body 28, so that, if the rollers are positioned against the straight edge of a sheet or pane of glass G as shown in Figs. 1 and 3, the body 28 will extend at right angles to said straight edge.

The bottom wall 52 of the channel portion 58 is provided with a second aperture, spaced somewhat inward of its aforementioned forward end; the aperture being adapted to receive the threaded stem I84 of an upwardly-directed bolt I86 having a head I88 disposed on the underside of the 4 wall 52. The stem I84 protrudes upward through the slot 22 and through an aperture in a triangular backing plate II8 resting upon the top wall 24 of the body 28; a washer H2 and wingnut H4 being provided upon the uppermost portion of the stem I84. The backing plate III) is provided with a forward edge IIIi disposed at right angles to the axi of the body 28 and constructed and arranged to bear against the rear edge of the cross-piece 88, as shown in Figs. 1-4. This provides additional support for the crosspiece 88 and guards the cross-piece against accidental displacement from its necessary right-angular relationship with respect to the body 28.

When the wing-nut H4 is loosened, the guidemember 48 is free to move longitudinally along the body and can be manually adjusted to position the cutter any desired distance inward of the free edge of the sheet of glass G, after which the wing-nut is tightened to lock the guide-member securely to the body.

The device is then positioned against the sheet of glass to be cut, so that the rollers 68, 92, 92, bear firmly against the edge of the glass, while the wheel 44 of the cutter 42 rests upon the top surface of the glass, with the axis of the wheel parallel to the axis of the body 28, as indicated in Figs. 1-3.

It is apparent that, if the guide-member 48 is then moved manually along the straight edge of the sheet of glass G (i. e., vertically in Fig. l), the cutting wheel 44 will roll along the top surface of the glass as the rollers 68, 82, 92, roll along the side edge, thereby producing a score line extending parallel to, and spaced a predetermined distance inward from, the free edge. The sheet of glass can be broken cleanly along the score line thus produced, in a manner well known in the art.

It can be seen that, by simply loosening and retightening the wing-nut H4, the glass worker or glazier can adjust the device to cut sheets of glass into difierent-size smaller sheets or panes having absolutely parallel side (within the tolerances normally required), so long as he has an original straight edge to work from.

When the cutting wheel becomes worn or dull, the cutter can be quickly and easily replaced by simply loosening the clamping member 36 in the manner described above.

The body 28, the channel portion 58, the crosspiece 58, and the insert pieces 82 can all be formed easily and inexpensively from commercially available U-shaped metal channel; preferably of aluminum or other light-weight metal or alloy so as to minimize the total weight of the device and to make it convenient for a worker to use and carry about. The rollers, bolts, spacer nuts, etc. are all commercially available items, while the triangular plate H8 can be easily cut or stamped from sheet aluminum or other suitable material. The device can be assembled from its component parts in a matter of a few minutes.

The present invention can be embodied in other forms and, therefore, the above-described embodiment is to be considered, in all respects, merely a illustrative, and not restrictive; reference being made to the appended claims, rather than to the foregoing specification, as indicating the scope of the invention.

Having thus described our invention, we claim as new and desire to protect by Letters Patent the following:

l. A portable glass cutting device comprising an elongated body of inverted U-shaped crosssectional configuration having a slot running longitudinally along its top wall, means for mounting a glass cutting tool at one end of said body, a guide-member mounted upon said body and movable longitudinally therealong, said guide-member including a portion disposed Within the channel of the body and a cross-piece slidably straddling the body in right-angular relationship thereto and connected to the channeldisposed portion by a bolt passing through said slot, clamping means for releasably locking said guide-member to said body, a roller mounted upon said connecting bolt and a plurality of aligned rollers mounted upon said cross-piece on either side of the body, the rollers being disposed on the underside of the cutting device at right angles to the axis of the body and being positionable against an edge of a sheet of glass or the like whereby the cutting tool will extend downward and into contact with the upper face of the sheet; the cutting tool producing a score line parallel to, and spaced a predetermined distance inward from, said edge when the device is manually moved so that the rollers ride along the edge.

2. A construction according to claim 1 wherein the cross-piece is also of inverted U-shaped cross-sectional configuration, with the sides cut out at the center to fit over the body.

3. A construction according to claim 2 wherein separate insert-pieces are disposed within the channel of the cross-piece on either side of the body, and wherein the rollers are mounted on bolts running upward through the insert-pieces and the top wall of the cross-piece.

4. A construction according to claim 8 wherein the clamping means includes a bolt running from the channel-disposed portion of the guidemember upward through the slot in the top wall of the body, and an adjusting nut threadedly mounted upon the uppermost protruding end of the bolt and constructed and arranged to be releasably tightened against the top wall.

5. A portable glass cutting device comprising an elongated body of inverted U-shaped crosssectional configuration having a slot running longitudinally along its top wall, means for mounting a glass cutting tool at one end of said body, a guide-member mounted upon said body and movable longitudinally therealong, said guidemember including a cross-piece disposed transversely of said body and a portion of U-shaped cross-section disposed within the channel of the body, clamping means for releasably locking said guide-member to said body and including a bolt running from the channel-disposed portion of the guide-member upward through the slot in the top wall of the body and an adjusting nut threadedly mounted upon the uppermost protruding end of the bolt and constructed and arranged to be releasably tightened against said top wall, and a plurality of aligned rollers mounted on the underside of said cross-piece and disposed in rightangular relationship to the axis of the body, the rollers being positionable against an edge of a sheet of glass or the like whereby the cutting tool will extend downward and into contact with the upper face of the sheet; the cutting tool producing a score line parallel to, and spaced a predetermined distance inward from, said edge when the device is manually moved so that the rollers ride along the edge.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,195,886 Wheeler Aug. 22, 1916 1,788,175 Strobel Jan. 6,.1931 1,792,393 Phillips ..1 Feb. 10, 1931 2,354,539 Passick et al. July 25, 1944 2,591,999 Barham Apr. 8, 1952 

